Meet our Outpatient Nutrition Team

MacKenzie Curtis

Dr. Linda Schack

Mackenzie is a Registered Dietitian Nutritionist specializing in pediatrics, diabetes, and gastrointestinal disorders. She is a part of the Outpatient Diabetes Education Program and Medical Nutrition Therapy Office at the Torrance Memorial Specialty Center. She is currently an instructor of Torrance Memorial’s Healthy Ever After program, Cancer and Nutrition classes, and Diabetes Self-Management Training Program nutrition classes. Her nutrition interest began at a young age leading to her first nutrition presentation as a high school senior. Mackenzie completed her undergraduate degree at Keene State College in New Hampshire followed by a dietetic internship through Oregon State University. She also works at Harbor-UCLA Medical Center where she provides nutrition care for both adult and pediatric patients. She has been practicing dietetics for the past five years and has grown to love the community she serves and the impact she is able to make by promoting health and wellness. Mackenzie aims to provide tailored nutrition advice to all clients to support long term, healthy lifestyle changes. Outside of work her favorite hobbies include hiking, running, shopping at the farmer’s market, and cooking.


Andrea Guastamacchio

Dr. Linda Schack

Andrea became interested in the field of nutrition after learning how food can be used to prevent and manage many diseases. She was excited by the prospect of helping the community become more proactive and knowledgeable about using food as medicine. Andrea is a proud graduate of California State University, Long Beach where she completed her Bachelor of Science in Nutrition and Dietetics. She went on to complete her Dietetic Internship at New York Institute of Technology. Andrea is a Registered Dietitian Nutritionist and Certified Diabetes Educator; she has worked in the Outpatient Diabetes Education Program and the Medical Nutrition Therapy Office at Torrance Memorial for over 16 years and currently teaches the nutrition classes for Torrance Memorial’s Diabetes Self-Management Training Program. Andrea specializes in Diabetes education as well as sees clients for weight management, hypertension, chronic kidney disease, heart healthy lifestyle modifications and more. She enjoys helping clients make lifestyle changes and learning their stories to help them succeed. She is a mom who loves eating and cooking delicious and healthy food with friends and family. She also enjoys what the California lifestyle offers: lots of fresh produce, sunshine, and the beach!


Sonia Villasenor

Sonia is a Registered Dietitian Nutritionist who has been working at Torrance Memorial for 25 years. She specializes in oncology patients and her goal and passion is helping cancer patients meet their nutritional needs using evidence-based recommendations. Sonia’s counseling incorporates topics including prevention of weight loss, maintenance of optimal nutrition status during cancer treatment, and managing treatment side effects (taste changes, mouth sores, nausea, vomiting, diarrhea) to improve clinical outcomes and quality of life. If needed, she can provide recommendations for nutrition support including tube feeding and parenteral nutrition support. Sonia also has experience with conditions including hypertension, diabetes, and gastrointestinal disorders and is building on her knowledge of metabolic and bariatric surgeries as well. Sonia earned her Bachelor of Science degree in Nutrition and Dietetics from California State University, Long Beach. She completed her Dietetic Internship at Utah State University. Sonia is bilingual (English/Spanish) and can provide nutrition education to Spanish speaking patients. She loves spending quality time with her two children and her adorable granddaughter. She also enjoys cooking, exercising, and going on long walks by the beach.


Kristen Hung

Julie Baird PsyDKristen is a Registered Dietitian Nutritionist who has a passion for disease prevention through nutrition and for helping clients develop a healthier relationship with food. She graduated from the University of California, Berkeley with a Bachelor of Science degree in Nutritional Science/Dietetics and completed her Master of Public Health degree at the University of California, Los Angeles. Kristen completed her dietetic internship at the VA Greater Los Angeles Healthcare System where she subsequently served as an inpatient clinical dietitian. Kristen now serves at Torrance Memorial in both inpatient and outpatient capacities. As part of the Medical Nutrition Therapy team she specializes in adult weight management and bariatrics, and also provides consultation for chronic diseases including lipid disorders, hypertension, pre-diabetes, gastrointestinal disorders, and more. She frequently leads classes for pre-diabetes, adult weight management (CORE4), and pediatric weight management (Healthy Ever After), and often speaks at community events. Kristen enjoys creating fun and healthy meals for her family and being a mom to her spirited toddler. In her free time she might be found dancing, reading, or enjoying the outdoors.


Noel (Duong) Le

Michele Manarino, M.S., R.D.

Noel is a Registered Dietitian Nutritionist who aims to heal and nourish by guiding clients to make healthy diet and lifestyle changes. She is a graduate from the University of Minnesota, Twin Cities and completed her dietetic internship through the University of Minnesota Medical Center. Working at Torrance Memorial, she enjoys navigating the unique challenges presented by both inpatient and outpatient care, combined with serving a diverse client population. In her experience, she has worked with an array of conditions/illnesses including cancer, kidney disease, gastrointestinal disorders, malnutrition, and pre-diabetes. Noel is also passionate about continuing to build on her expertise involving metabolic and bariatric surgeries and adult weight management. She has spoken at various community events and currently leads community classes including pre-operative and post-operative nutrition classes for bariatric patients and CORE4 adult weight management classes. In her free time, she enjoys exploring new places, being a plant-mom, and daydreaming about the day she can finally adopt a furry four-legged pup.